1.

basic chemical formular of air

to recieve 02, is to be blanked, ignoored or "aired" by another person

owwwww blad, that girl just gave you 02

2.

Short for Digimon Adventure Zero-two, the second season of digimon adventure. Known for armor and jogress evolution, Vamdemon's third return, Black War Greymon's angst, and the infamous ending that put in couplings with virtually no evidence over ones that had a great deal of hintings.

The ending of 02 sucked. Sorato and Kenyako? I can think of three to five more likely pairings for each of the characters involved.